body{padding:0; margin:0;}
.world {height:500px; background-color: #eee; position: relative;}
.world .hole, .world .stone, .world .shead, .world .sbody, .world .egg{width:23px; height:23px; margin:1px; position: absolute;}
.world .hole{ background-color: #cccccc;}
.world .stone{ background-color: #808080;}
.world .shead{ background-color: red;}
.world .sbody{ background-color: green;}
.world .egg{ background-color: yellow;}